we are given
The water level in Ricky lake changes at an average of -7/48 inch for 1 year
It means that
In 1 year , the water level changes at 
and we have to find the water level change after 5 years
so, we can multiply both sides by 5
In 5*1 year , the water level changes at 
In 5 years , the water level changes at 
Hence,
the water level change after 5 years is ........Answer
X + y = 27
y = x + 3
x + (x+ 3) = 27
2x + 3 = 27
2x + 3 (-3) = 27 (-3)
2x/2 = 24/2
x = 12
x + 3 = y
12 + 3 = y
y = 15
x = 12, y = 15
hope this helps
Answer:
<h3>The value of the second number is <em><u>24</u></em><em><u> </u></em>and the first no <em><u>12</u></em><em><u>.</u></em></h3>
Step-by-step explanation:
<h3> Greetings !</h3>
From, the given word explanation try to create your own equation like
- x + y = 36... (1) let the two numbers be x and y respectively.
- 2x = y ....(2) let x be the first no and it's twice that of the second number.
From, equation (1) solve for x
- x + y = 36
- x = 36-y... (3)
Substitute, equation (3) to equation (2).
- 2(36-y) =y
- 72 - 2y =y
- 72 = y + 2y.... solve for y
- 72 = 3y.... divide both sides by 3
- 72/3 = y..
- <em><u>y=24</u></em><em><u> </u></em><em><u>.</u></em>..simplified
Answer:
ab + bc + ca = 40
Step-by-step explanation:
Using the expansion identity
(a + b + c)² = a² + b² + c² + 2(ab + bc + ca) , that is
9² = 1 + 2(ab + bc + ca)
81 = 1 + 2(ab + bc + ca) ← subtract 1 from both sides
80 = 2(ab + bc + ca) ← divide both sides by 2
40 = ab + bc + ca
Answer:
0.26666666666
Step-by-step explanation:
because u have to multiply it and that's your answer
